Because most of the energy is in the form of heat, fusion reactions are usually slowed down by the surrounding material which soaks up the heat.Ī phenomenologically important characteristic of fusion reactions is that they are relatively slow. The electrons that are stripped off the nucleus of the atom are released back into the surrounding area. Then, before you can say “Nobel please”, it’s gone. So to get an electron to settle into a “g” sub-shell you’d need to create element 121 or higher and then, before all of it radioactively decays into lighter elements (which has a way of ionizing everything nearby), you need to get it cooled off and electrically neutral. In order to fill up all of their shells and sub-shells, atoms need to be in a relatively cool environment. Generally speaking, the processes used to create new elements are energetic enough (hot enough) that the atoms are formed in an ionized state. The half-life of element 118 is about 1/1000 of a second, and 121’s is probably shorter. The higher the atomic number, the less stable the element is. This is all a bit of a moot point however. For comparison, uranium is element number 92. However, the largest found so far is 118 (so close!). The first atom that would need a “g” orbital would be element 121. The different "levels" of the periodic table are caused by the strange filling order of the electron orbitals.
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